1 /* 2 * Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above 10 * copyright notice, this list of conditions and the following 11 * disclaimer in the documentation and/or other materials provided 12 * with the distribution. 13 * * Neither the name of The Linux Foundation nor the names of its 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 31 #ifndef __HWC_BUFFER_ALLOCATOR_H__ 32 #define __HWC_BUFFER_ALLOCATOR_H__ 33 34 #include <sys/mman.h> 35 #include <fcntl.h> 36 37 namespace gralloc { 38 39 class IAllocController; 40 41 } // namespace gralloc 42 43 namespace sdm { 44 45 class HWCBufferAllocator : public BufferAllocator { 46 public: 47 HWCBufferAllocator(); 48 49 DisplayError AllocateBuffer(BufferInfo *buffer_info); 50 DisplayError FreeBuffer(BufferInfo *buffer_info); 51 uint32_t GetBufferSize(BufferInfo *buffer_info); 52 DisplayError GetAllocatedBufferInfo(const BufferConfig &buffer_config, 53 AllocatedBufferInfo *allocated_buffer_info); 54 DisplayError GetBufferLayout(const AllocatedBufferInfo &buf_info, 55 uint32_t stride[4], uint32_t offset[4], 56 uint32_t *num_planes); 57 int SetBufferInfo(LayerBufferFormat format, int *target, int *flags); 58 59 private: 60 struct MetaBufferInfo { 61 int alloc_type; //!< Specifies allocation type set by the buffer allocator. 62 void *base_addr; //!< Specifies the base address of the allocated output buffer. 63 }; 64 65 gralloc::IAllocController *alloc_controller_; 66 }; 67 68 } // namespace sdm 69 #endif // __HWC_BUFFER_ALLOCATOR_H__ 70 71